forked from zhurui/management
55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var bind = require('function-bind');
|
||
|
|
|
||
|
|
var ES2016 = require('./es2016');
|
||
|
|
var assign = require('./helpers/assign');
|
||
|
|
var forEach = require('./helpers/forEach');
|
||
|
|
|
||
|
|
var GetIntrinsic = require('./GetIntrinsic');
|
||
|
|
|
||
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
||
|
|
var $isEnumerable = bind.call(Function.call, GetIntrinsic('%ObjectPrototype%').propertyIsEnumerable);
|
||
|
|
var $pushApply = bind.call(Function.apply, GetIntrinsic('%ArrayPrototype%').push);
|
||
|
|
|
||
|
|
var ES2017 = assign(assign({}, ES2016), {
|
||
|
|
ToIndex: function ToIndex(value) {
|
||
|
|
if (typeof value === 'undefined') {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
var integerIndex = this.ToInteger(value);
|
||
|
|
if (integerIndex < 0) {
|
||
|
|
throw new RangeError('index must be >= 0');
|
||
|
|
}
|
||
|
|
var index = this.ToLength(integerIndex);
|
||
|
|
if (!this.SameValueZero(integerIndex, index)) {
|
||
|
|
throw new RangeError('index must be >= 0 and < 2 ** 53 - 1');
|
||
|
|
}
|
||
|
|
return index;
|
||
|
|
},
|
||
|
|
|
||
|
|
// https://www.ecma-international.org/ecma-262/8.0/#sec-enumerableownproperties
|
||
|
|
EnumerableOwnProperties: function EnumerableOwnProperties(O, kind) {
|
||
|
|
var keys = ES2016.EnumerableOwnNames(O);
|
||
|
|
if (kind === 'key') {
|
||
|
|
return keys;
|
||
|
|
}
|
||
|
|
if (kind === 'value' || kind === 'key+value') {
|
||
|
|
var results = [];
|
||
|
|
forEach(keys, function (key) {
|
||
|
|
if ($isEnumerable(O, key)) {
|
||
|
|
$pushApply(results, [
|
||
|
|
kind === 'value' ? O[key] : [key, O[key]]
|
||
|
|
]);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return results;
|
||
|
|
}
|
||
|
|
throw new $TypeError('Assertion failed: "kind" is not "key", "value", or "key+value": ' + kind);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
delete ES2017.EnumerableOwnNames; // replaced with EnumerableOwnProperties
|
||
|
|
|
||
|
|
module.exports = ES2017;
|